There are several different types of Bitcoin clients. Header-only clients like Bither trust that the majority of mining power is honest for the purposes of enforcing network rules such as the 21 million BTC limit. Full clients do not trust miners in this way.

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Hi, is the port changed from 3333 to 3334 and why this is so secret?Does the "Your balance is......." on http://ltcmine.ru/mypayments.php refreshing in realtime? (because "worker list" shows only zeroes in speed columns)What is the fee - 3,3 or 2,5% or...?